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Determine whether y varies directly with x. If so, find the constant of variation k and write the equation. x y 4 6.4 7 11.2 10 16 13 20.8
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k = y/ x
so what should i do
it varies directly. to get the constant divide a y value by its corresponding x value
6.4/4=1.6=k
yes. that's right
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so i do that to all of them and that all
yes. They will all give you the same answer. That shows its directly proportional
thanks
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